payer.de

Checked 21 October 2026, 23:42 UTC · via 8.8.8.8
!Passed with warnings
19 passed 2 warnings 0 failed 8 info

Registration

info

.de country-code

Found

TLD
.de (country-code)
ICANN policies apply
no

Checks

  • i
    .de is a country-code TLD (ccTLD)
    Country-code TLD: governed by its local registry under national policy, not by an ICANN contract. Registrar accreditation, dispute resolution and RDAP/WHOIS rules are set by the registry.
    #1
  • ✓ TLD delegated and signed #2
    .de is delegated in the root zone and DNSSEC-signed.
  • i
    Registration data not available
    No registration data via RDAP: the registry of .de offers no RDAP service. Many ccTLD registries don't offer RDAP; check the registry's WHOIS instead.
    #3

Delegation

warn

ns55.1und1.de, ns56.1und1.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns55.1und1.de, ns56.1und1.de
NS in the zone
ns1051.ui-dns.biz, ns1051.ui-dns.com, ns1051.ui-dns.de, ns1051.ui-dns.org
NameserverAddressesNetwork (AS)Glue
ns1051.ui-dns.biz (zone only)185.132.33.51 2607:f1c0:fe:53:185:132:33:51AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-
ns1051.ui-dns.com (zone only)185.132.34.51 2607:f1c0:fe:53:185:132:34:51AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-
ns1051.ui-dns.de (zone only)185.132.32.51 2607:f1c0:fe:53:185:132:32:51AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-
ns1051.ui-dns.org (zone only)185.132.35.51 2607:f1c0:fe:53:185:132:35:51AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-
ns55.1und1.de (parent only)185.132.34.33 2607:f1c0:fe:53:185:132:34:33AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-
ns56.1und1.de (parent only)185.132.35.32 2607:f1c0:fe:53:185:132:35:32AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns55.1und1.de, ns56.1und1.de.
    #6
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: ns55.1und1.de, ns56.1und1.de; only in the zone: ns1051.ui-dns.biz, ns1051.ui-dns.com, ns1051.ui-dns.de, ns1051.ui-dns.org. ns1051.ui-dns.biz, ns1051.ui-dns.com, ns1051.ui-dns.de, ns1051.ui-dns.org, ns55.1und1.de, ns56.1und1.de report NS ns1051.ui-dns.biz ns1051.ui-dns.com ns1051.ui-dns.de ns1051.ui-dns.org.
    #7
  • ✓ No glue needed #8
    All nameservers are outside the zone, so no glue records are needed.
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • i
    One address family in one network
    all IPv6 addresses are in 2607:f1c0:fe::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS15418 (IONOS-ANYCAST - Fasthosts Internet Limited, GB): 12 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • i
    All nameserver names under .de
    All nameserver names are under one TLD, so a problem with that TLD also makes the nameservers unreachable. Some operators use names under two TLDs for extra resilience.
    #12
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1051.ui-dns.biz 185.132.33.51NOERROR, 5 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1051.ui-dns.biz 2607:f1c0:fe:53:185:132:33:51NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1051.ui-dns.com 185.132.34.51NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1051.ui-dns.com 2607:f1c0:fe:53:185:132:34:51NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1051.ui-dns.de 185.132.32.51NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1051.ui-dns.de 2607:f1c0:fe:53:185:132:32:51NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1051.ui-dns.org 185.132.35.51NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1051.ui-dns.org 2607:f1c0:fe:53:185:132:35:51NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns55.1und1.de 185.132.34.33NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns55.1und1.de 2607:f1c0:fe:53:185:132:34:33NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns56.1und1.de 185.132.35.32NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns56.1und1.de 2607:f1c0:fe:53:185:132:35:32NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/

Checks

  • ✓ All respond #14
    All 12 nameserver addresses answered.
  • ✓ All authoritative #15
    Every responding nameserver answers authoritatively for the zone.
  • ✓ No recursion #16
    The nameservers do not answer recursive queries for other domains.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns1051.ui-dns.biz: "Served by PowerDNS - https://www.powerdns.com/"; ns1051.ui-dns.com: "Served by PowerDNS - https://www.powerdns.com/"; ns1051.ui-dns.de: "Served by PowerDNS - https://www.powerdns.com/"; ns1051.ui-dns.org: "Served by PowerDNS - https://www.powerdns.com/"; ns55.1und1.de: "Served by PowerDNS - https://www.powerdns.com/"; ns56.1und1.de: "Served by PowerDNS - https://www.powerdns.com/".
    #17
  • ✓ Zone transfers refused #18
    No nameserver allows a zone transfer to the public.
  • ✓ TCP supported #19
    All nameservers answer over TCP.
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

pass

serial 2007062015 · primary ns1051.ui-dns.biz

Found

Primary (MNAME)
ns1051.ui-dns.biz
Contact (RNAME)
hostmaster.1und1.de
Serial
2007062015
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1051.ui-dns.biz (185.132.33.51)2007062015
ns1051.ui-dns.biz (2607:f1c0:fe:53:185:132:33:51)2007062015
ns1051.ui-dns.com (185.132.34.51)2007062015
ns1051.ui-dns.com (2607:f1c0:fe:53:185:132:34:51)2007062015
ns1051.ui-dns.de (185.132.32.51)2007062015
ns1051.ui-dns.de (2607:f1c0:fe:53:185:132:32:51)2007062015
ns1051.ui-dns.org (185.132.35.51)2007062015
ns1051.ui-dns.org (2607:f1c0:fe:53:185:132:35:51)2007062015
ns55.1und1.de (185.132.34.33)2007062015
ns55.1und1.de (2607:f1c0:fe:53:185:132:34:33)2007062015
ns56.1und1.de (185.132.35.32)2007062015
ns56.1und1.de (2607:f1c0:fe:53:185:132:35:32)2007062015

Checks

  • ✓ Serial 2007062015 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1051.ui-dns.biz is one of the listed nameservers.
  • ✓ Contact hostmaster@1und1.de #25
    The SOA RNAME hostmaster.1und1.de means hostmaster@1und1.de.
  • ✓ Date-based serial #26
    The serial 2007062015 follows the YYYYMMDDnn convention (2007-06-20).

DNSSEC

warn

Not signed

Found

Validated by resolver
no

Checks

  • !
    Not signed
    The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27

Records

info

9 records at the apex

Found

Read from
185.132.33.51:53
TypeValueTTL
SOAns1051.ui-dns.biz. hostmaster.1und1.de. 2007062015 28800 7200 604800 30086400
NSns1051.ui-dns.biz.172800
NSns1051.ui-dns.com.172800
NSns1051.ui-dns.de.172800
NSns1051.ui-dns.org.172800
A217.160.0.2003600
MX10 mx01.ionos.de.3600
MX10 mx00.ionos.de.3600
TXT"v=spf1 include:_spf-eu.ionos.com ~all"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 1h, NS 2d. The NS TTL at the parent is 1d and in the zone 2d; resolvers may use either.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • i
    No CAA records
    Without CAA records any certificate authority may issue certificates for this domain. A CAA record limits issuance to the CAs you use.
    #35